Hayami started dancing while in her fifth year of elementary school at the age of ten. Wanting to dance came from an influence from her sister. Soon after she started her dance lessons she started taking voice training lessons to learn how to sing. She took lessons in the jazz, hip-hop, lock, and and house styles of dance, and decided she liked jazz the best.

In October 2002 she auditioned at "GIZA studio PRESENTS "DIG STAR"" and won. On her sixteenth birthday she released her debut single, "MeiQ!?-Meikyu-MAKE★YOU". The song was used as the opening theme for the anime Tantei Gakuen Q. She soon then released her debut album ("Meikyu") less then three months later. Hayami began writing her own lyrics at this time. She wrote one song ("記憶") for her debut album, and wrote 2 B-sides for each of her singles up until Dessert Days. Starting with her "Yume RIARU" single, Hayami has written all of her own lyrics, with the exception of a few on her "JUICY" album.

Hayami has since continued to release music. Starting in November of 2003 she released "Mienai Story" and released four more singles and her second album "JUICY" all in a time span of a year.

Since then Hayami's releases have become more inconsitent. Only releasing one single ("JUMP!NG↑GO☆LET'S GO⇒") in 2005 and a year later released another single ("PEACH:LIME//SHAKE"), which followed by the release of her "Love Drops" mini-album. A month after the mini-album was released, Hayami came back with the single "Go! MY HEAVEN" and "See you Darling" which was released early 2007. She has mentioned in her blog entries that she is still writing and recording songs, but there have been no official announcements on these yet.